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Article
Experimental Study of the Reflection of Light Radiation from Crystalline Particles in the Lower Troposphere
We considered the phenomenon of reflection of light radiation from crystalline particles preferentially oriented in the atmosphere, as well as the physical patterns and possible conditions favoring this reflec...
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Article
Lidar-balloon Experiment on Studying Stratospheric Aerosol for Climate Observations and Diagnostic Problems
The results of synchronous remote (lidar) and direct (balloon) measurements of tropospheric and stratospheric aerosol parameters carried out in Tomsk on January 27–30, 2022 are presented. The objective of the ...
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Article
Spectral Analysis of Aqueous Aerosol by Femtosecond Pulse Laser-Induced Breakdown Method
The results of analysis of aerosol in aqueous NaCl solution by the femtosecond-pulse laser-induced breakdown spectroscopy (FS-LIBS) method are considered. Estimates are presented for the impurity (Na) concentr...
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Article
Experimental Determination of Aerosol Particle Sizes Using Supercontinuum Radiation and Estimation of the Directional Pattern of Radiation from the Filamentation Region of Femtosecond Pulses
According to the results of studying the interaction of high-power femtosecond pulsed radiation from a titanium–sapphire laser with the aerosol particles of an aqueous solution of NaCl, we estimate the directi...
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Article
Microwave and Lidar Measurements of Ozone and Temperature Variations during Stratospheric Warmings of 2012–2015
We present the results of joint observations of ozone and temperature in the middle atmosphere above Tomsk in December–January 2012–2013 and in December–February 2014–2015 during stratospheric warmings. The re...
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Article
Features of Propagation of Amplitude-Modulated High-Power Femtosecond Laser Radiation in Air
The results of experimental studies of the features of formation and path propagation of high-intensity light channels under conditions of distortions of the initial profile of a high-power femtosecond laser r...
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Article
Determination of the Elemental Composition of Aerosol by Femtosecond Laser-Induced Breakdown Spectroscopy
For remote sensing of the aerosol atmosphere by femtosecond laser-induced breakdown spectroscopy (LIBS), it is necessary to choose an effective scheme based on the information about an angular distribution of ...
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Article
Spatial Structure of Femtosecond Laser Radiation during Filamentation in Air
The results of experimental and theoretical studies of the evolution of the small-scale transverse structure of high-power femtosecond laser radiation propagating in air in the multiple filamentation mode are ...
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Article
Study of the Emission Glow of Solids and Anthropogenic Aerosols in the Field of High-Power Femtosecond Laser Radiation during Self-focusing in Air for Remote Sensing of the Atmosphere
Results of the complex experimental study of the spectral and temporal characteristics of the emission glow of control samples of several solid-state substances (imitation of topographic targets in the atmosph...
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Article
Control of Multiple Filamentation of Femtosecond Laser Pulses in Air
The results are presented of experiments on controlling the characteristics of the multiple filamentation domain of femtosecond laser pulses along atmospheric paths via variations in the initial spatial focusi...
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Article
Laser and Optical Sounding of the Atmosphere
Lidar and searchlight instruments and techniques for atmospheric research developed at the V.E. Zuev Institute of Atmospheric Optics, Siberian Branch, Russian Academy of Sciences, in recent years are described...
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Article
The Effect of Phase Aberrations on the Position and Length of the Filamentation Domain
The results of experimental and theoretical studies of femtosecond laser pulse filamentation with use of a bimorph deformable mirror are presented. The mirror allows controlling the position of the filamentati...
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Article
The Analysis of Capabilities of Neural Networks in CO2 Sounding with Spaceborne IPDA-Lidar with the Use of Different A Priori Data
The possibility of retrieving, using a neural network, the columnar carbon dioxide concentration profile when sounding from a space orbit of 450 km and from a balloon at altitudes of 23 and 10 km are analyzed....
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Article
Localized High-Intensity Light Structures during Multiple Filamentation of Ti:Sapphire-Laser Femtosecond Pulses along an Air Path
The results of experimental studies of the transverse structure of a laser beam after multiple filamentation are presented. A ring structure of radiation is formed around individual filaments in a beam cross s...
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Article
Multiple Filamentation Various Diameters Laser Beams at a Atmospheric Path
Results of experiments on controlling the position and length of the filamentation zone of femtosecond laser pulses in atmospheric path length 150 m using different initial spatial focusing and defocusing. The...
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Article
Global Self-Focusing and Features of Multiple Filamentation of Radiation of a Subterawatt Ti:Sapphire Laser with a Centimeter Output Aperture Along a 150-m Path
The formation and propagation of postfilamentation channels along a controllable path 150 m long are studied experimentally for collimated beams of different diameters. During multiple filamentation, a laser b...
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Article
The study of cirrus clouds with the polarization lidar in the South-East China (Hefei)
Results of the study of microphysical characteristics of cirrus clouds in Hefei, China, with a multiwavelength polarization lidar are presented. Measurements were carried out from December 2010, to February 20...
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Article
Visibility range of LED signaling lights of a runway
Results of calculations for the luminous intensity from light emitting diode (LED) lights necessary for reliable visual detection of runway (RW) lights in real operational conditions are presented. The followi...
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Article
High-Resolution Molecular Spectroscopy in Tomsk: Establishment, Development, and Current Status
The paper presents brief information about the establishment and development in Tomsk of high-resolution molecular spectroscopy – the field of science closely related to a study of the optical properties of th...
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Article
Forecast of intense near- and mid-IR laser radiation propagation along slant atmospheric paths
The effectiveness of the use of intense radiation from different near- and mid-IR laser sources propagating along high-altitude slant optical paths is numerically estimated on the basis of the optical model of...
